package com.zzyl.framework.interceptor;


import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.ObjectUtil;
import com.zzyl.common.thread.UserThreadLocal;
import com.zzyl.common.utils.StringUtils;
import com.zzyl.framework.web.service.TokenService;
import io.jsonwebtoken.Claims;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class MemberInterceptor implements HandlerInterceptor {
    @Autowired
    private TokenService tokenService;


    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String authorization = request.getHeader("authorization");
        //1.判断token是否为空
        if (StringUtils.isEmpty(authorization)) {
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return false;
        }
        //2.解析token并判断是否解析成功
        Claims claims = tokenService.parseToken(authorization);
        if (ObjectUtil.isEmpty( claims)) {
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return false;
        }
        //3.获取用户信息
        Long userId = MapUtil.get(claims, "userId", Long.class);
        UserThreadLocal.set(userId);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserThreadLocal.remove();
    }
}
